S
M
T
W
T
F
S
26
79°
52°
27
80°
55°
28
80°
60°
29
70°
63°
30
73°
58°
31
80°
56°
1
84°
58°
2
80°
65°
3
81°
63°
4
79°
57°
5
79°
54°
6
87°
65°
7
86°
66°
8
84°
65°
9
81°
62°
10
81°
52°
11
78°
61°
12
78°
56°
13
81°
58°
14
79°
53°
15
79°
53°
16
73°
65°
17
81°
57°
18
79°
60°
19
80°
63°
20
81°
61°
21
79°
60°
22
75°
59°
23
77°
59°
24
76°
57°
25
75°
57°
26
73°
56°
27
81°
60°
28
73°
52°
29
73°
51°
30
77°
56°
31
79°
58°
1
75°
58°
2
80°
59°
3
80°
59°
4
79°
58°
5
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Great Barrington
Great Barrington's August 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 51° and 65°. The average high for August is 78° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Great Barrington. See also: September | October | November.